They are already at war. Russia clearly doesn't have any other hand to play, that's why they're offering a bounty.
Ukraine has nothing more to fear from Russia, because Russia doesn't have anything else to threaten them with apart from nukes, which also is not an option that will give them victory.
Ukraine has nothing more to fear from Russia, because Russia doesn't have anything else to threaten them with apart from nukes, which also is not an option that will give them victory.